fix(#3299): SearchAutocomplete/SearchWithin support icon prop override

[majornista]

Closes #3299

✅ Pull Request Checklist:

• Included link to corresponding React Spectrum GitHub Issue SearchAutocomplete: support icon prop override #3299 .
• Added/updated unit tests and storybook for this change (for new code or code which already has tests).
• Filled out test instructions.
• Updated documentation (if it already exists for this component).
• Looked at the Accessibility Practices for this feature - Aria Practices

📝 Test Instructions:

1. Open https://reactspectrum.blob.core.windows.net/reactspectrum/61069c227ee21cbb713035237b414e39ca813c09/storybook/index.html?path=/story/searchautocomplete--icon-filter&providerSwitcher-toastPosition=bottom
2. Verify the SearchAutocomplete uses the Filter icon.
3. Open https://reactspectrum.blob.core.windows.net/reactspectrum/61069c227ee21cbb713035237b414e39ca813c09/storybook/index.html?path=/story/searchautocomplete--icon-null&providerSwitcher-toastPosition=bottom
4. Verify the SearchAutocomplete does not render an icon.
5. Repeat steps 1-4 using a mobile user agent to verify that the behavior is similar with MobileSearchAutoComplete.
6. Open https://reactspectrum.blob.core.windows.net/reactspectrum/61069c227ee21cbb713035237b414e39ca813c09/storybook/index.html?path=/story/searchfield--icon-null&providerSwitcher-toastPosition=bottom
7. Verify the SearchField does not render an icon.
8. Open https://reactspectrum.blob.core.windows.net/reactspectrum/61069c227ee21cbb713035237b414e39ca813c09/storybook/index.html?path=/story/searchfield--isquiet-icon-null&providerSwitcher-toastPosition=bottom
9. Verify the quiet SearchField does not render an icon.
10. Open https://reactspectrum.blob.core.windows.net/reactspectrum/61069c227ee21cbb713035237b414e39ca813c09/storybook/index.html?path=/story/searchwithin--icon-filter&providerSwitcher-toastPosition=bottom
11. Verify the SearchWithin uses the Filter icon.
12. Open https://reactspectrum.blob.core.windows.net/reactspectrum/61069c227ee21cbb713035237b414e39ca813c09/storybook/index.html?path=/story/searchwithin--icon-null&providerSwitcher-toastPosition=bottom
13. Verify the SearchWithin does not render an icon.

🧢 Your Project:

Adobe/Accessibility

[adobe-bot]

Build successful! 🎉

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[reidbarber]

Looks great, tested on Chrome, FF, Safari, and iOS Safari.

One thing, I believe SearchWithin may be or has already been deprecated, so it might be better not to include the change in this. I'm not opposed to including it, but someone else may have an objection.

If you can add a chromatic story for each of these, I'm good to approve.

[adobe-bot]

Build successful! 🎉

• View the storybook
• View the storybook-17
• View the storybook-16
• View the documentation

[adobe-bot]

Build successful! 🎉

• View the storybook
• View the storybook-17
• View the storybook-16
• View the documentation

[adobe-bot]

Build successful! 🎉

• View the storybook
• View the storybook-17
• View the storybook-16
• View the documentation